Volunteers with the group spent some time at more than a dozen other school sites throughout the Valley to plant more trees. It's part of a national Arbor Day celebration, observed on the fourth Friday of April.

Officials say ideally they'd like to plant 1,000 to 2,000 trees a year to keep up with the tree mortality rate.

Lee Ayres of Tree Fresno said, "I think people know the value of shade they have a calming effect and they add beauty to every neighborhood."

Volunteers with the group planted Holly Oaks at Sanger and Clovis Unified campuses.

Since it began in 1985, Tree Fresno has planted more than 39,000 trees in the Fresno and Clovis area.